Upgrade compileSdk and build tools to 27.x

Author: manas-chaudhari

android-mvvm/build.gradle

@@ -1,12 +1,12 @@
 apply plugin: 'com.android.library'
 
 android {
-    compileSdkVersion 25
-    buildToolsVersion '25.0.2'
+    compileSdkVersion 27
+    buildToolsVersion '27.0.3'
 
     defaultConfig {
         minSdkVersion 9
-        targetSdkVersion 25
+        targetSdkVersion 27
         versionCode 1
         versionName "1.0"
         testInstrumentationRunner "android.support.test.runner.AndroidJUnitRunner"
@@ -46,8 +46,8 @@ dependencies {
     androidTestCompile 'com.android.support.test:rules:0.5'
     compile "io.reactivex.rxjava2:rxjava:2.0.7"
     compile 'io.reactivex.rxjava2:rxandroid:2.0.1'
-    compile 'com.android.support:recyclerview-v7:25.2.0'
-    compile 'com.android.support:appcompat-v7:25.2.0'
+    compile 'com.android.support:recyclerview-v7:27.1.1'
+    compile 'com.android.support:appcompat-v7:27.1.1'
 }
 
 apply from: file('bintray-push.gradle')

build.gradle

@@ -3,9 +3,10 @@
 buildscript {
     repositories {
         jcenter()
+        google()
     }
     dependencies {
-        classpath 'com.android.tools.build:gradle:2.3.0'
+        classpath 'com.android.tools.build:gradle:3.1.3'
         classpath 'com.jfrog.bintray.gradle:gradle-bintray-plugin:1.7.1'
         classpath 'com.github.dcendents:android-maven-gradle-plugin:1.4.1'
 
@@ -17,6 +18,7 @@ buildscript {
 allprojects {
     repositories {
         jcenter()
+        google()
     }
 }
 

rxjava-compat/build.gradle

@@ -1,12 +1,12 @@
 apply plugin: 'com.android.library'
 
 android {
-    compileSdkVersion 25
-    buildToolsVersion "25.0.2"
+    compileSdkVersion 27
+    buildToolsVersion "27.0.3"
 
     defaultConfig {
         minSdkVersion 9
-        targetSdkVersion 25
+        targetSdkVersion 27
         versionCode 1
         versionName "1.0"
 
@@ -39,7 +39,7 @@ dependencies {
     androidTestCompile('com.android.support.test.espresso:espresso-core:2.2.2', {
         exclude group: 'com.android.support', module: 'support-annotations'
     })
-    compile 'com.android.support:appcompat-v7:25.2.0'
+    compile 'com.android.support:appcompat-v7:27.1.1'
     compile "com.github.akarnokd:rxjava2-interop:0.9.3"
     compile 'io.reactivex:rxjava:1.2.7'
     compile project(':android-mvvm')

sample/build.gradle

@@ -1,13 +1,13 @@
 apply plugin: 'com.android.application'
 
 android {
-    compileSdkVersion 25
-    buildToolsVersion '25.0.2'
+    compileSdkVersion 27
+    buildToolsVersion '27.0.3'
 
     defaultConfig {
         applicationId "com.manaschaudhari.android_mvvm.sample"
         minSdkVersion 15
-        targetSdkVersion 25
+        targetSdkVersion 27
         versionCode 1
         versionName "1.0"
     }
@@ -36,7 +36,7 @@ android {
 dependencies {
     compile fileTree(dir: 'libs', include: ['*.jar'])
     testCompile 'junit:junit:4.12'
-    compile 'com.android.support:appcompat-v7:25.2.0'
+    compile 'com.android.support:appcompat-v7:27.1.1'
     compile project(':android-mvvm')
     compile project(':rxjava-compat')
 

sample/src/main/java/com/manaschaudhari/android_mvvm/sample/calculator_example/BindingAdapters.java

@@ -53,6 +53,7 @@ public static int toLayout(Calculator.Operation operation) {
         }
     }
 
+    @BindingConversion
     public static Calculator.Operation toOperation(int layoutId) {
         switch (layoutId) {
             case R.id.radio_add: